Connections is based on Little Black Book  1.1.2 by Gerald S. Fuller
Little Black Book is based on Addressbook 0.7 by Sam Wilson

Uses a function here and there from NextGEN Gallery by Alex Rabe.
http://wordpress.org/extend/plugins/nextgen-gallery/

Update Notice in plugin admin inspired by Changelogger 1.2.8 by Oliver Schlöbe.
http://wordpress.org/extend/plugins/changelogger/

vCard class is a modified version by Troy Wolf.
http://www.troywolf.com/articles/php/class_vcard/

Screen Options class by Janis Elsts
http://w-shadow.com/blog/2010/06/29/adding-stuff-to-wordpress-screen-options/

$.goMap() jQuery Google Maps Plugin by Jevgenijs Shtrauss
http://www.pittss.lv/jquery/gomap/

MarkerClusterer jQuery Google Maps Marker Clustering Plugin by Xiaoxi Wu
http://gmaps-utility-library-dev.googlecode.com/svn/tags/markerclusterer/

jQuery Validation Plugin by Jörn Zaefferer
http://bassistance.de/jquery-plugins/jquery-plugin-validation/

Email and URL validation methods by Gizmo Digital Fusion
http://wpcodesnippets.info/blog/two-useful-php-validation-functions.html

Social media icons by WPZOOM.com
http://www.wpzoom.com/wpzoom/500-free-icons-wpzoom-social-networking-icon-set/
License CC BY-SA 3.0  http://creativecommons.org/licenses/by-sa/3.0/

iTunes icon by Paul Robert Lloyd
http://www.iconfinder.com/icondetails/43155/48/itunes_icon
http://paulrobertlloyd.com/
License Attribution-ShareAlike 2.0 UK: England & Wales (CC BY-SA 2.0)

Podcast icon by schollidesign
http://findicons.com/icon/94188/podcast_new)
License GNU/GPL

vCard Icon by Oliver Twardowski
http://www.iconfinder.com/icondetails/50717/48/add_vcard_icon
License Free for commercial use
http://www.iconfinder.com/browse/iconset/iconset-addictive-flavour/#readme

jQuery UI CSS and icons by helenhousandi
https://github.com/helenhousandi/wp-admin-jquery-ui